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The only professionally flat hopped Vsr-10 action army hop up chamber on the market. Professionally machined, installed and assembled by Hop Systems.
What's in this product?
Action Army VSR-10 CNC Hop Up Chamber
Action Army Hop Up Milling Service for R-HOP / FLAT-HOP
Flat Hop Service (Bucking, Hop-up Modification) for R-HOP